Lock.



F No. 665,232; Patented Jan. I, l90l.

P. KOSSOV &- w. WISCHEW.

LOCK.

(Application filed Dec. 28, 1898.)

(No Model.) a Sheets-Sheet c: we

INVENTORS .Pezerfibls's'av 7722681 19 zlschew l Attorney B Shaeta-Sheet3.

Patented Jan. I, l90l.

LOCK.

'INVENTORS feZerIfa-ssov (Application flied De 2 8 P. KGSSOV 8. W.WISCHEW;

' (NoModeL) WITNESSES- No. 665,232. Patented Jan. I, l90l.

P. KOSSOV & w. wlsbuzw.

Lock, (Applicatiop filed Dec. 28 1898.) (No Model.)

6 Sheets-Sheet 4.

WITNESSES INVENTORS J 55959 77 /7 a S'S?/Z9 mlschew f y Atiarney m:uonms warms 00.. PHOTO-UTHQ. msmus'mu. u. c,

No. 665,232. Patented Jan. 1, mm.

P. KOSSOV &. w. WISCHEW.

LOCK.

' (Application filed Dec. 28, 1898.) (No Model.) 6 Sheets-Sheet 6WITNESSES INVEj ZORS 2% g A fezer aszgov i flasszlif 77219678660 v g72474, Allorney UNITED STATES.

ATENT FFICE.

PETER KOSSOV AND WASSILY WISOHEW, OF ST. PETERSBURG, RUSSIA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 665,232, dated January1, 1901.

Application filed December 28, 1898. Serial No. 700,529. No model.)

To all whmn it may concern:

Be it known that we, PETER KOSSOV and WASSILY WISCHEW, subjects of theEmperor of Russia, and residents of St. Petersburg, Russia, haveinvented certain new and useful Improvements in Safety-Locks, of whichthe following is a specification.

Our invention relates to safety locks and latches.

It consists in certain novel features of construction. in the parts of alook, also the arrangement and combination of the same, and, further, inthe adaptation of a key or keys essentially coacting with the look.

It further consists in certain other novel features hereinafterenumerated, and particularly pointed out in the claims hereto ap- Fig. 7is a section of the pinion on the axle ofthe cylinder. Fig. 8 is a sideview of a modified form of the lock. Fig. 9 is a front view thereof.Fig. 10 is a View of the opposite side of the lock. Fig. 11 is a sectionthrough the lock. Fig. 12 is a transverse section of a modification.Fig. 13 is an end view showing the removable head or button I) and theretaining-levers; and Figs. 14 and 15 illustrate, respectively, anelevation and a crosssection of the casing, showing the key-slots.

Referring to Figs. 1 to 7, 6 shows a lookcasing provided with the usualmeans, such as screw-holes o, for attachment to a door. Said casingcarries a rotative cylinder a and locking-bolt g, having a rack c, aspresently described. (1 designates a series of levers, fulcrumed as at mand having lateral arms or extensions normally pressed intocorresponding notches in the lockingbolt by springs M. The lockingbolt 9is slidably mounted in the usual manner in the casing and has a bore 10to receive a spindle l and a Fig. 2 is a front seat for the coiledspring 1', surrounding said spindle. The casing and door S are providedwith a slot '5 at one side of the cylinder at, which is adapted to guidea suitable key directly against the cylinder, the continuity of the slotbeing broken only by the falseway t. The cylinder 0. has a plurality ofradial studs or extensions diversely formed, and one of its axles orhubs carries a pinion 1), provided with gear-teeth A, which mesh withthe racks c. Said pinion has an annular recess wherein are provided asemicircular rod B and a spiral spring D to actuate the same.

To actuate the lock, the key 70, Fig. 6,which has its surface providedwith slots corresponding to the arrangement of the studs of cylinder a,is inserted in the slot 11 of the door in a determinate position, withthe thumb of the hand resting in the recess The end of the key enters inthe lock-casing through the slot 71, which corresponds exactly to thewidth and thickness of the key and which is cut in a well-tempered steelportion of the casing e. The key being thrust deeper bears on the studs00 of cylinder at and causes the latter to turn, the studs meanwhileentering the corresponding holes 00 of the key. By going deeper the keypasses by the falsewayt until it strikes the lever d, while the pinionremains still motionless by reason of the cutout Z, as will be explainedhereinafter. The key being thrust deeper, the levers at rock on theirpivots, and their long hooked arms disengage from the lock-bolt g. Thepinion A tn rns simultaneously,and the lock-bolt, being drawn by thegear, slides into the interior of the lock. By withdrawing the key allthe movements are repeated in the inverse order and the deviceis locked.While the cylinder 0, turns, the pin C, Fig. 7, bears on the curvedmember B and pushes itinto the pinion until the pin reaches the end ofthe cut-out Z. By the inverse motion the spring D bears on therod B,which in turn pushes the pin 0, and thus returns the cylinder to itsoriginal position. In the event that the size and disposition of theholes 00 of the key do not correspond with the studs on cylinder a thekey would be diverted into the falseway t and would be unable to actuatethe levers d.

In the construction shown in Figs. 8 to 11 we employ several cylindersa, operating on the same principle of the look just described. In thismodified lock, however, two keys are employed. In said figures, edesignates the easing of the lock; Z, the lock-bolt, having a rack c; l,the latch engaging the lock-bolt; a, the cylinders; C, toothed wheel onthe axes of cylinders a. y is a notch on the shaft of the third cylindera. 000; designate cams on the axles of the cylinders a. u u are latchesengaging the lock-bolt Z. a is a latch engaging the slides 3 Z), pinionscarried on the shaft of cylinder a; b, toothed wheels secured on theaxles of cylinders a. b is a toothed wheel revolubly mounted on the wallof the casing c. s designates that part of the door to which the lock isattached. 7c 7; are rods. it are key-slots. (Z (Z are levers pivoted atan for actuating rods 7c 7c. 1525' are falseways for the keys. 0: arestuds on the cylinders a. r m m are springs bearing, respectively, onslides 3 rods 7t, and lock-bolt Z. This lock operates as follows: Toactuate the lock, one of the keys, held as before indicated, is insertedthrough the door S in the free slott'of the lock. The extremity of thekey entering into the mechanism of the lock bears on the studs of thefirst cylinder a. The further entrance of the key causes the firstcylinder to turn, while the radial studs of this cylinder enterconsecutively in the corresponding holes of the key, which slides by thefalseway t and moves the levers d, causing the latter to release therods 7c 7r from the slide 1 The extremity of the key now bears on thepins of the second cylinder, which, pressed by the key, turns on itsaxis, while its pins engage the holes of the key, which passes by thesecond falseway and bears on the pins of the third cylinder. At the sametime the latch it also disengages from the slide 1 The key beinginserted deeper, the third cylinder turns on its axis, and its pinsengage also the corresponding holes of the key. The slide 31 actuated bythe pinion b, Fig. 8, and by the toothed wheel 6 is drawn aside andopens the second slot t'. The first key then remains in the lock, andthe second key is inserted in the second slot t'. This key is pushedanalogically, as the first one, until it bears on the third cylinder,which latter causes the levers d to move, while the rods 70 and thelatch u are withdrawn and release the lock-bolt Z. The key continuing toadvance, the third cylinder turns on its axis, its pins enter into thecorresponding holes of the key, and the toothed wheel Z) is caused toenter the lock-bolt in the lock, which is then unlocked. \Vhen the keyis withdrawn, the same movements take place in the inverse order and thelock is closed.

Figs. 12 to 15 show a further modification of the lock with rotatingcylinder, which may be closed or opened from the side opposed to thekey-slot by means of a handle or button. This lock is in every waysimilar to the lock shown in Figs. 1 to 7 with this difference, that itis provided on the opposed side with'a movable head or button a, securedon a spindle. The transversal interior head 61 of this spindle bears onthe levers, whose hooked ends retain the lock-bolt. When the button a ispressed, the cross-head (Z causes the levers to rock in the same manneras when these levers are actuated by the key, as before explained. Thebutton a is then pushed aside, its spindle sliding in a slot provided inthe coverplate 0 of the casing and entering into a notch cut in thelatch c, pivoted at f and pressed bya fiat spring II. In this way thelock-bolt is drawn into the lock, where it is retained by the notch ofthe latch. To close the lock, it is sufficient to press down the buttong of the latch c, and the lock-bolt, pushed out by its spring, is drawnout.

Having thus described our invention, we claim- 1. In a look as describedthe combination of a spring-latch having a rack-surface, and a recess onone of its sides, a pivoted tumbler adapted to engage in said recess, arotative cylinder with diversely-formed extensions radiating from itssurface, a key-slot extending to the rear arm of the tumbler andseparated by a falseway, a toothed wheel borne upon the hub of saidcylinder adapted to mesh with said rack and to retract the latch-boltwhen the cylinder is actuated by the thrust action of a proper key withmeans for returning said elements to their normal position,substantially as described.

2. In a look as described the combination of a spring-latch having arack surface and a recess on one of its sides, a spring-pressed pivotedtumbler adapted to engage said recess, a rotative cylinder bearing aplurality of radial and diversely-formed extensions, a key-slotextending to the arm of the tumbler and separated by a falseway, atoothed wheel borne upon the hub of said cylinder, adapted to. mesh withsaid rack and to retract the latch-bolt when the cylinder is actuated bythe thrust action of a proper key, the key, said key having openingsstamped in the same, corresponding to the diversely-formed extensions ofthe cylinder and adapted to engage therewith, a circular groove in theend of the cylinder, a semicircular member therein, a pin bearingagainst said member and having a limited movement and a spring impingingagainst said pin and curved member and adapted to return the cylinder toits normal position on the removal of the key, substantially asdescribed.

3. In a lock as described, the combination of a spring-latch having arack-surface and a recess on one of its sides, a sliding bolt at theopposite side of the lock, a plurality of rotative cylinders havingdiversely-formed extensions radiating from their curved surfaces, twokey-slots, one of said slots normally closed by said sliding bolt,falseways located in said key-slots, duplicate keys, said keys havingopenings stamped in the same corresponding to the divcrsely-formedextensions of the cylinders and mechanism actuated by the first cylinderunder the thrust action of a proper key, whereby the second key-slot isopened and the latch retracted on the entrance in said key-slot of aproper key, substantially as described.

4. In a look as described, the combination of a latch-bolt having arack-surface and a bore at its rear extremity, a spindle receivedtherein, a spring borne upon said spindle and impinging against thelatch-bolt and lockcasing, a pivoted tumbler engaging a recess in saidbolt, and a spring-bolt adapted to release said tumbler by pressure uponthe same; a rotative cylinder bearing a plurality of radial anddiversely-formed extensions, a key-slot extending to and separated fromthe arm of the tumbler by a falseway, a toothed .ed to engage therewithand means for returning said parts to their normal positionsubstantially as described.

In witness whereof we have hereunto set our hands in presence of twowitnesses.

PETER KOSSOV. WASSILY WISCHEW.

Witnesses:

N. TSCHEKALOFF, J. BLAU.

